DM74LS273WM

DM74LS273WM Datasheet


DM74LS273 8-Bit Register with Clear

Part Datasheet
DM74LS273WM DM74LS273WM DM74LS273WM (pdf)
Related Parts Information
DM74LS273N DM74LS273N DM74LS273N
PDF Datasheet Preview
DM74LS273 8-Bit Register with Clear

DM74LS273 8-Bit Register with Clear

The DM74LS273 is a high speed 8-bit register, consisting of eight D-type flip-flops with a common Clock and an asynchronous active LOW Master Reset. This device is supplied in a 20-pin package featuring inch row spacing.
s Edge-triggered s 8-bit high speed register s Parallel in and out s Common clock and master reset
Ordering Code:

Order Number Package Number

Package Description

DM74LS273WM

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide

DM74LS273SJ

M20D
20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide

DM74LS273N

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbol

Connection Diagram

VCC = Pin 20 GND = Pin 10

Pin Descriptions

Truth Table

Pin Names

Clock Pulse Input Active Rising Edge

Data Inputs

Asynchronous Master Reset Input Active LOW

Flip-Flop Outputs

Inputs

H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial

Outputs
2000 Fairchild Semiconductor Corporation DS009825

DM74LS273

Functional Description

The DM74LS273 is an 8-bit parallel register with a common Clock and common Master Reset. When the MR input is LOW, the Q outputs are LOW, independent of the other inputs. Information meeting the setup and hold time requirements of the D inputs is transferred to the Q outputs on the LOW-to-HIGH transition of the clock input.

Logic Diagram

DM74LS273

Absolute Maximum Ratings Note 1

Supply Voltage

Input Voltage

Operating Free Air Temperature Range 0°C to +70°C

Storage Temperature Range
−65°C to +150°C

Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.

Recommended Operating Conditions

VCC VIH VIL IOH IOL TA tS H tS L tH H tH L tW H tW L
tW L tREC

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature Setup Time HIGH or LOW Dn to CP Hold Time HIGH or LOW Dn to CP Pulse Width HIGH or LOW

MR Pulse Width LOW Recovery Time MR to CP

Units
15 ns
20 ns

Electrical Characteristics

Over recommended operating free air temperature range unless otherwise noted

Parameter

Conditions

Input Clamp Voltage

VCC = Min, II = −18 mA
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Datasheet ID: DM74LS273WM 513790